<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    message: {{ message }}
    <button @click="handleModify">修改</button>
    <button @click="visible = !visible">显隐</button>
    <son v-if="visible"></son>
  </div>

  <script src="./lib/vue.global.js"></script>
  <script>
    Vue.createApp({
      data() {
        return {
          message: 'Hello',
          visible: true
        }
      },
      beforeCreate() {
        console.log('before create......', this.message)
      },
      created() {
        console.log('created.......', this.$el)
        this.$nextTick(() => {
          console.log('nextTick....', this.$el)
        })
        // setTimeout(() => {
        //   console.log('timeout....', this.$el)
        // })
      },
      beforeMount() {
        console.log('before mount......', this.$el)
      },
      mounted() {
        console.log('mounted.......', this.$el)
      },
      beforeUpdate() {
        console.log('before update......')
      },
      updated() {
        console.log('updated.......')
      },
      methods: {
        handleModify() {
          this.message = '你好!!!'
          this.$nextTick(() => {
            console.log('修改后的 dom:', this.$el.wholeText)
          })
        }
      }
    })
    .component('son', {
      template: `
        <div>子组件</div>
      `,
      beforeUnmount() {
        console.log('before unmount......')
      },
      unmounted() {
        console.log('unmounted.......')
      },

    })
    .mount('#app')
  </script>
</body>
</html>